Leadstab® AO 802 (DSTDP)

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Leadstab^® AO 802 (DSTDP)

Leadstab AO 802 is a highly efficient thioester auxiliary antioxidant that is widely used in polymer compounds to inhibit thermal oxidative aging, preventing the consequent loss of mechanical strength and the onset of powdering.
CAS number: 693-36-7

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Product Description

Chemical name :	Dioctadecyl 3,3’-thiodipropionate
CAS number :	693-36-7
Formula :	C₄₂H₈₂O₄S
M.W. :	683
Chemical structure :

Leadstab<sup>®</sup> AO 802 (DSTDP)

Specification

Appearance	White powder or pastilles
Purity	99.0% min
Melting point	63.5-68.5°C
Chroma	50 Pt-Co max
Acid value	0.10 mgKOH/g max
Ash	0.05% max
Volatility	0.50% max
Transmittance
@425 nm	97.0% min
@500 nm	98.0% min

Application

Leadstab AO 802 is a thiosynergist heat stabilizer usually used together with phenolic antioxidants to improve the lifetime of polymers particularly when used at elevated temperatures. It has good compatibility with most polymers and is suitable for use in PP, PE, PS, polyesters, polyurethane, PVC and in synthetic rubbers.